D240...Trust Your Intuition

I've had an intuition that something was up with my girlfriend. I showed up at her place and found her in her bedroom with a dude. She had been drinking. I know she is an alcoholic. We had just got off the phone maybe an hour before with her out of the blue saying she loves me and that I need to trust her and that she wants to only be with me and that she wanted to be with me that night. 

I told her I was heading home but when she was done at the bar to call me. No call. I texted her goodnight and no response. That's when I decided to get up out of bed and sorta trace her steps. I just had a feeling something wasn't right.

I don't know what to say. I got to her house which she shares with others. Front door is always open and I've always been welcome at all times of the day. Her bedroom door was locked and I knocked. She asked who it was and I said "Adam, just wanted to see you and hang out a bit!". The room went silent and so I called her phone. It started ringing and then I said, "obviously your in there". She came out, dude on her bed in the shadows of the bedroom. She then went to the bathroom and said "I didn't even kiss him." 

Her roommates told me she had multiple dudes in and out before, but they didn't really know our relationship so thought maybe it was open so they didn't say anything. She's the one that is always saying she loves me, she wants only me, she wants my baby. I feel so hurt right now but so proud that I followed my gut intuition and decided to track her down. I spoke to her softly and was glad to get her to face what she was doing. It was very painful and I deserve so much better. It's just sad because I did love her and think she's amazing in many ways.

I want to get drunk and smoke right now pretty badly. I just want to feel sorry for myself and be mad at her. I will not smoke or drink though because it just adds another problem on top of this one and would make me feel like the next problem would do the same. I'm never going back to where I was before. I'm never smoking or drinking again. They both have nothing to offer me but pain and suffering and life offers too much of that in the first place. 

 Adam